TRANSFERRING RESPONSIBILITY OF A PHYSICAL KEY FROM A TRANSFERER TO A TRANSFEREE

It is provided method of transferring responsibility of a physical key (3) from a transferer (5a) to a transferee (5b). The method is performed by a transferee device (2b), being a user device (2b) of the transferee (5b). The method comprises: establishing (40) a local communication channel (4) with a user device (2a) of the transferer (5a): receiving (42), over the local communication channel (4), a request to register that the responsibility of the physical key (3) is transferred from the transferer (5a) to the transferee (5b): receiving (44) user input indicating that the responsibility of the physical key (3) is accepted by the transferee (5b); and transmitting (46) a confirmation of registration of transferring the responsibility of the physical key (3) to the transferee (5b).